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ESO signs €400 million contract for E-ELT dome and 39-metre telescope structure
At a ceremony held today in Germany, the European Southern Observatory and the ACe Consortium signed the largest contract ever in ground-based astronomy for key components of the 39-metre aperture European Extremely Large Telescope (E-ELT). The 85-metre-diameter, 5000 tonne dome and telescope structure will take telescope engineering into new territory.